Problem 742. Symmetric matrix

Created by Aurelien Queffurust

Solve Later

{"relationships":[{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/document","targetMode":"","relationshipId":"rId1","target":"/matlab/document.xml"},{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/output","targetMode":"","relationshipId":"rId2","target":"/matlab/output.xml"}],"parts":[{"partUri":"/matlab/document.xml","relationship":[],"contentType":"application/vnd.mathworks.matlab.code.document+xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<w:document xmlns:w=\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\"><w:body><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>You must create a n-by-n</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:b/></w:rPr><w:t>symmetric</w:t></w:r><w:r><w:t> matrix such that A(row,col) = row/col for col &gt;= row.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Example if n =3 :</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>output is : A =</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"code\"/></w:pPr><w:r><w:t><![CDATA[      1.0000    0.5000    0.3333\n      0.5000    1.0000    0.6667\n      0.3333    0.6667    1.0000]]></w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>since A(2,1) = A(1,2) = 1/2</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>or A(3,1)= A(1,3) = 1/3</w:t></w:r></w:p></w:body></w:document>"},{"partUri":"/matlab/output.xml","contentType":"text/xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?><embeddedOutputs><metaData><evaluationState>manual</evaluationState><layoutState>code</layoutState><outputStatus>ready</outputStatus></metaData><outputArray type=\"array\"/><regionArray type=\"array\"/></embeddedOutputs>"}]}

Solve

Solution Stats

553 Solutions
266 Solvers

Last Solution submitted on Sep 02, 2022

Last 200 Solutions

Problem Comments

1 Comment

1 Comment

Marco Riani on 31 Jan 2022

In my opinion the caption of the problem "Symmetric matrix" has to be changed because it is too vague. I would suggest something like symmetric matrix with i,j=i/j

Solution Comments

Solution 111170

1 Comment

1 Comment

yurenchu on 30 Jul 2017

Faulty solution that passes the test suite due to ill-defined test criterium in tests 3 and 4: obviously, the function output and A_correct are not the same.

Problem Recent Solvers266

Problem Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Problem 742. Symmetric matrix

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers266

Suggested Problems

More from this Author30

Problem Tags

Community Treasure Hunt

Problem 742. Symmetric matrix

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers266

Suggested Problems

More from this Author30

Problem Tags

Community Treasure Hunt

Players